Morbidity of low birth weight and-or preterm children compared to that of the "mature". I. Methodological considerations and findings for the first 2 years of life.
D000208:Acute Disease; D001724:Birth Weight; D002140:California; D005865:Gestational Age; D006760:Hospitalization; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology*; D007234:Infant, Premature